Practice, practice, practice. A steady diet of brass and lead WILL make you better! And definitely not cause heavy metal poisoning.  Definitely. 

• 100% cotton
• Sport Grey is 90% cotton, 10% polyester
• Ash Grey is 99% cotton, 1% polyester
• Heather colors are 50% cotton, 50% polyester
• Fabric weight: 5.0–5.3 oz/yd² (170-180 g/m²) 
• Open-end yarn
• Tubular fabric
• Taped neck and shoulders
• Double seam at sleeves and bottom hem
• Blank product sourced from Honduras, Nicaragua, Haiti, Dominican Republic, Bangladesh, Mexico

Disclaimers: 
• Due to the fabric properties, the White color variant may appear off-white rather than bright white.
• Dark color speckles throughout the fabric are expected for the color Natural.